I have the current satellite+, in fact I have three: one 48-60" light on each of my 125g tanks. I really like how you can control the color of the light. In my 125g tank, the lights are not bright enough to grow plants, but definitely show the fish very well. The only thing you have to decide is the length of your light. I decided on doing one 48" light (arms extend to 60") on my 125g tanks, because I like having the sides of the tank a bit darker. I can still easily see the fish when they are on the sides, but if they don't want to be under the spotlight they don't have to. It is just preference.
As far as bang for the buck, I really found these lights offered the most for the price. They are not the brightest, but you can choose what warmth of color you want - do you want more of a blue hint, orange, green, etc.
